This world map shows where pollution is getting worse. There’s good news for the U.S.

BERLIN — When the Eiffel Tower nearly disappeared in a thick haze of smog last year, French authorities decided it was time to act. They limited car traffic in Paris as a last-resort measure. But many argued that much more should have been done much earlier. Many researchers, who had warned of dangerous pollution levels for years, complained that authorities […]











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